HTML linting: turn off HTMLTidy warnings for HTML fragments.
http://bugs.activestate.com/show_bug.cgi?id=100418
r=marky

(integrated from komodo (trunk) change 82060 by ericp)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13659 b87d16e7-d29f-4ee1-b5ec-817d645d335f